On Wed, 10 Jan 2018 11:47:58 +0200
"Michael S. Tsirkin" <> wrote:
> Performance analysis of this is in my kvm forum 2016 presentation. The
> idea is to have a r/w descriptor in a ring structure, replacing the used
> and available ring, index and descriptor buffer.
>
> This is also easier for devices to implement than the 1.0 layout.
> Several more enhancements will be necessary to actually make this
> efficient for devices to use.
>
> Signed-off-by: Michael S. Tsirkin <>
> ---
> content.tex | 36 ++-
> packed-ring.tex | 668 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 701 insertions(+), 3 deletions(-)
> create mode 100644 packed-ring.tex
Some minor gripes by git am:
.git/rebase-apply/patch:288: trailing whitespace.
Buffer ID is included in the last descriptor in the list.
.git/rebase-apply/patch:342: trailing whitespace.
are reserved and are ignored by the device.
